145kV SF6 Circuit Breaker

SF6 Circuit Breaker 145kV

Features:

1.Reliable insulation performances.

2.Utilization of spring operating mechanism.

3.Low noise,easy or free of maintenance.

4.Easy installation and adjstment.

Technical Data:

Item	Unit	Data
Rated voltage	kV	145
Rated current	A	3150
Rated short-circuit breaking current for Isc	kA	40	31.5	40	31.5
Rated short-circuit making current (peak)	kA	100	80	100	80
Rated short-time withstands current/contnuous time	kA/s	40/4	31.5/4	40/4	31.5/4
Rated withstands current (peak)	kA	100	80	100	80
Power frequency withstands voltage for 1min(Breaks)	kV	230+273	230	210	210
Power frequency withstands voltage for 1min(To earth)	kV	230	230	210	210
Lighting impulse withstand voltage (peak) (Breaks)	kV	550+103	550	450	450
Lighting impulse withstand voltage (peak) (To earth)	kV	550	550	450	450

145kV SF6 Circuit Breaker